content: /* Copyright (C) 2016-2018 Alibaba Group Holding Limited
  
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at
  
      http://www.apache.org/licenses/LICENSE-2.0
  
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
  ==============================================================================*/
  
  // Protocol Buffers - Google's data interchange format
  // Copyright 2008 Google Inc.  All rights reserved.
  // http://code.google.com/p/protobuf/
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are
  // met:
  //
  //     * Redistributions of source code must retain the above copyright
  // notice, this list of conditions and the following disclaimer.
  //     * Redistributions in binary form must reproduce the above
  // copyright notice, this list of conditions and the following disclaimer
  // in the documentation and/or other materials provided with the
  // distribution.
  //     * Neither the name of Google Inc. nor the names of its
  // contributors may be used to endorse or promote products derived from
  // this software without specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  package com.google.protobuf.test;
  import com.google.protobuf.*;
  
  import protobuf_unittest.UnittestProto.TestAllExtensions;
  import protobuf_unittest.UnittestProto.TestAllTypes;
  import protobuf_unittest.UnittestProto.TestEmptyMessage;
  import protobuf_unittest.UnittestProto.TestPackedTypes;
  
  import junit.framework.TestCase;
  import java.util.Arrays;
  
  /**
   * Unit test for {@link DynamicMessage}.  See also {@link MessageTest}, which
   * tests some {@link DynamicMessage} functionality.
   *
   * @author kenton@google.com Kenton Varda
   */
  public class DynamicMessageTest extends TestCase {
    TestUtil.ReflectionTester reflectionTester =
      new TestUtil.ReflectionTester(TestAllTypes.getDescriptor(), null);
  
    TestUtil.ReflectionTester extensionsReflectionTester =
      new TestUtil.ReflectionTester(TestAllExtensions.getDescriptor(),
                                    TestUtil.getExtensionRegistry());
    TestUtil.ReflectionTester packedReflectionTester =
      new TestUtil.ReflectionTester(TestPackedTypes.getDescriptor(), null);
  
    public void testDynamicMessageAccessors() throws Exception {
      Message.Builder builder =
        DynamicMessage.newBuilder(TestAllTypes.getDescriptor());
      reflectionTester.setAllFieldsViaReflection(builder);
      Message message = builder.build();
      reflectionTester.assertAllFieldsSetViaReflection(message);
    }
  
    public void testSettersAfterBuild() throws Exception {
      Message.Builder builder =
        DynamicMessage.newBuilder(TestAllTypes.getDescriptor());
      Message firstMessage = builder.build();
      // double build()
      builder.build();
      // clear() after build()
      builder.clear();
      // setters after build()
      reflectionTester.setAllFieldsViaReflection(builder);
      Message message = builder.build();
      reflectionTester.assertAllFieldsSetViaReflection(message);
      // repeated setters after build()
      reflectionTester.modifyRepeatedFieldsViaReflection(builder);
      message = builder.build();
      reflectionTester.assertRepeatedFieldsModifiedViaReflection(message);
      // firstMessage shouldn't have been modified.
      reflectionTester.assertClearViaReflection(firstMessage);
    }
  
    public void testUnknownFields() throws Exception {
      Message.Builder builder =
          DynamicMessage.newBuilder(TestEmptyMessage.getDescriptor());
      builder.setUnknownFields(UnknownFieldSet.newBuilder()
          .addField(1, UnknownFieldSet.Field.newBuilder().addVarint(1).build())
          .addField(2, UnknownFieldSet.Field.newBuilder().addFixed32(1).build())
          .build());
      Message message = builder.build();
      assertEquals(2, message.getUnknownFields().asMap().size());
      // clone() with unknown fields
      Message.Builder newBuilder = builder.clone();
      assertEquals(2, newBuilder.getUnknownFields().asMap().size());
      // clear() with unknown fields
      newBuilder.clear();
      assertTrue(newBuilder.getUnknownFields().asMap().isEmpty());
      // serialize/parse with unknown fields
      newBuilder.mergeFrom(message.toByteString());
      assertEquals(2, newBuilder.getUnknownFields().asMap().size());
    }
  
    public void testDynamicMessageSettersRejectNull() throws Exception {
      Message.Builder builder =
        DynamicMessage.newBuilder(TestAllTypes.getDescriptor());
      reflectionTester.assertReflectionSettersRejectNull(builder);
    }
  
    public void testDynamicMessageExtensionAccessors() throws Exception {
      // We don't need to extensively test DynamicMessage's handling of
      // extensions because, frankly, it doesn't do anything special with them.
      // It treats them just like any other fields.
      Message.Builder builder =
        DynamicMessage.newBuilder(TestAllExtensions.getDescriptor());
      extensionsReflectionTester.setAllFieldsViaReflection(builder);
      Message message = builder.build();
      extensionsReflectionTester.assertAllFieldsSetViaReflection(message);
    }
  
    public void testDynamicMessageExtensionSettersRejectNull() throws Exception {
      Message.Builder builder =
        DynamicMessage.newBuilder(TestAllExtensions.getDescriptor());
      extensionsReflectionTester.assertReflectionSettersRejectNull(builder);
    }
  
    public void testDynamicMessageRepeatedSetters() throws Exception {
      Message.Builder builder =
        DynamicMessage.newBuilder(TestAllTypes.getDescriptor());
      reflectionTester.setAllFieldsViaReflection(builder);
      reflectionTester.modifyRepeatedFieldsViaReflection(builder);
      Message message = builder.build();
      reflectionTester.assertRepeatedFieldsModifiedViaReflection(message);
    }
  
    public void testDynamicMessageRepeatedSettersRejectNull() throws Exception {
      Message.Builder builder =
        DynamicMessage.newBuilder(TestAllTypes.getDescriptor());
      reflectionTester.assertReflectionRepeatedSettersRejectNull(builder);
    }
  
    public void testDynamicMessageDefaults() throws Exception {
      reflectionTester.assertClearViaReflection(
        DynamicMessage.getDefaultInstance(TestAllTypes.getDescriptor()));
      reflectionTester.assertClearViaReflection(
        DynamicMessage.newBuilder(TestAllTypes.getDescriptor()).build());
    }
  
    public void testDynamicMessageSerializedSize() throws Exception {
      TestAllTypes message = TestUtil.getAllSet();
  
      Message.Builder dynamicBuilder =
        DynamicMessage.newBuilder(TestAllTypes.getDescriptor());
      reflectionTester.setAllFieldsViaReflection(dynamicBuilder);
      Message dynamicMessage = dynamicBuilder.build();
  
      assertEquals(message.getSerializedSize(),
                   dynamicMessage.getSerializedSize());
    }
  
    public void testDynamicMessageSerialization() throws Exception {
      Message.Builder builder =
        DynamicMessage.newBuilder(TestAllTypes.getDescriptor());
      reflectionTester.setAllFieldsViaReflection(builder);
      Message message = builder.build();
  
      ByteString rawBytes = message.toByteString();
      TestAllTypes message2 = TestAllTypes.parseFrom(rawBytes);
  
      TestUtil.assertAllFieldsSet(message2);
  
      // In fact, the serialized forms should be exactly the same, byte-for-byte.
      assertEquals(TestUtil.getAllSet().toByteString(), rawBytes);
    }
  
    public void testDynamicMessageParsing() throws Exception {
      TestAllTypes.Builder builder = TestAllTypes.newBuilder();
      TestUtil.setAllFields(builder);
      TestAllTypes message = builder.build();
  
      ByteString rawBytes = message.toByteString();
  
      Message message2 =
        DynamicMessage.parseFrom(TestAllTypes.getDescriptor(), rawBytes);
      reflectionTester.assertAllFieldsSetViaReflection(message2);
  
      // Test Parser interface.
      Message message3 = message2.getParserForType().parseFrom(rawBytes);
      reflectionTester.assertAllFieldsSetViaReflection(message3);
    }
  
    public void testDynamicMessageExtensionParsing() throws Exception {
      ByteString rawBytes = TestUtil.getAllExtensionsSet().toByteString();
      Message message = DynamicMessage.parseFrom(
          TestAllExtensions.getDescriptor(), rawBytes,
          TestUtil.getExtensionRegistry());
      extensionsReflectionTester.assertAllFieldsSetViaReflection(message);
  
      // Test Parser interface.
      Message message2 = message.getParserForType().parseFrom(
          rawBytes, TestUtil.getExtensionRegistry());
      extensionsReflectionTester.assertAllFieldsSetViaReflection(message2);
    }
  
    public void testDynamicMessagePackedSerialization() throws Exception {
      Message.Builder builder =
          DynamicMessage.newBuilder(TestPackedTypes.getDescriptor());
      packedReflectionTester.setPackedFieldsViaReflection(builder);
      Message message = builder.build();
  
      ByteString rawBytes = message.toByteString();
      TestPackedTypes message2 = TestPackedTypes.parseFrom(rawBytes);
  
      TestUtil.assertPackedFieldsSet(message2);
  
      // In fact, the serialized forms should be exactly the same, byte-for-byte.
      assertEquals(TestUtil.getPackedSet().toByteString(), rawBytes);
    }
  
    public void testDynamicMessagePackedParsing() throws Exception {
      TestPackedTypes.Builder builder = TestPackedTypes.newBuilder();
      TestUtil.setPackedFields(builder);
      TestPackedTypes message = builder.build();
  
      ByteString rawBytes = message.toByteString();
  
      Message message2 =
        DynamicMessage.parseFrom(TestPackedTypes.getDescriptor(), rawBytes);
      packedReflectionTester.assertPackedFieldsSetViaReflection(message2);
  
      // Test Parser interface.
      Message message3 = message2.getParserForType().parseFrom(rawBytes);
      packedReflectionTester.assertPackedFieldsSetViaReflection(message3);
    }
  
    public void testDynamicMessageCopy() throws Exception {
      TestAllTypes.Builder builder = TestAllTypes.newBuilder();
      TestUtil.setAllFields(builder);
      TestAllTypes message = builder.build();
  
      DynamicMessage copy = DynamicMessage.newBuilder(message).build();
      reflectionTester.assertAllFieldsSetViaReflection(copy);
    }
  
    public void testToBuilder() throws Exception {
      DynamicMessage.Builder builder =
          DynamicMessage.newBuilder(TestAllTypes.getDescriptor());
      reflectionTester.setAllFieldsViaReflection(builder);
      int unknownFieldNum = 9;
      long unknownFieldVal = 90;
      builder.setUnknownFields(UnknownFieldSet.newBuilder()
          .addField(unknownFieldNum,
              UnknownFieldSet.Field.newBuilder()
                  .addVarint(unknownFieldVal).build())
          .build());
      DynamicMessage message = builder.build();
  
      DynamicMessage derived = message.toBuilder().build();
      reflectionTester.assertAllFieldsSetViaReflection(derived);
      assertEquals(Arrays.asList(unknownFieldVal),
          derived.getUnknownFields().getField(unknownFieldNum).getVarintList());
    }
  }
  